@misc{indiciae824934423192,
  title = {Determination of Electron Affinity Differences by Surface Ionization},
  author = {Harden, C. S. and Muschlitz, E. E., Jr. and Stelman, D.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660018637},
  note = {Source identifier: 19660018637}
}